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Mamta Purohit , Jamaluddin , G. P. Mishra

Abstract

The germination tests were performed with 4 different tree species in laboratory. The purity percentage and number of pure seeds per kg were also calculated. Lagerstroemia parviflora showed poor germination even from the fresh lots while other species showed high germination percentage. Over all 12 fungi were recorded in blotter as well as potato-dextrose-agar test which varies from species to species. Out of 4 fungicides used for seed treatment Bavistin, Dithane M-45 and Thyride @ 3 gm/kg seed weight were highly effective in controlling the seed myeoflora. It is recommended that the seeds of B. monosperma, D. strictus, L. parviflora and P. pinnata may be treated with the above light dose of fungicides for controlling fungal infestation.

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Mamta Purohit , Jamaluddin , G. P. Mishra

Abstract

The seeas of Pithecelobium dulce, Tamrindus indica and Terminalia bellirica were collected from different localities of Madhya Pradesh. The germination of seeds was studied immediately after one month of collection and found more than 70 per cent germination on blotter paper as well as in soil mixture. Eight fungal species were isolated from the seeds of tested species. Aspergilli, Chaetomium sp., and Rhizopus stoloniler were associated with the seeds of all three species under study. The seed dressing with Bavistin, Dithane M-45, Thyride, F'ytolan and Ceresan @ 3 g per kg seed weight gave best control of majority of seed-born fungi.

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S. S. Bisen , G. P. Mishra , S. C. Sharm

Abstract

This study was taken up mainly for evaluation of the importance of epidermal features on the culm and leaf of bamboos. Critical analysis of the epidermal features present on the culm and leaf surface from the 36 species belonging to 22 genera either naturally growing or cultivated, show that the epidermal features are very useful in differentisting the genera and their species. The culm epidermis however is not that reliable, due to the variations from bottom to the top of the culm, associated with encrustations masking the details. The leaf epidermal features can be relied upon for identification, of genera and their species, as they show no variations due to age, locality, soil and environmental factors. If this approach is widely tried on the other genera and species growing in China, Japan, Indonesia, Malaysia and South America, the validity of this approach can be furtber tested, which will go a long way in bamboo identification and classification in the absence of flower.

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Ram Prasad , G. P. Mishra

Abstract

Studies on the litter productivity of a natural dry deciduous teak forests of Sagar (Madhya Pradesh) have been reported in this investigation. It has been observed that T. grandis alone produced one-third of the total production of stand. The other species which dominated the litter output in stand were : T. tomentosa, D. melanoxylon, Butea monosperma and Miliusa tomentosa. Small broken pieces of minor species accounted for another one-third of the total production. Other important tree species such as A. latifolia and L. parviflora in spite of their high plant density contributed only a fraction of the tota1 litter production indicating the immature plant stand of these species. The total leaf litter production in these forests was found to be 4.959 tonnes/ha. In the light of present investigations, it can be concluded that while relatively younger crop is more efficient in litter production, their distribution pattern is most important. Abundence of plants in juvenile phase instead of seedling and coppice phase appears to produce maximum foliage. Once the trees cross the juvenile phase the canopy is closed and thus the size of crown remains constant. It was not due to bigger crown and more leaves but due to thicker branch wood. Besides age, the tree density and basal area play equally significant role in leaf litter output. This hypothesis can be explained by the basal area and litter output of T. grandis and T. tomentosa. In addition to remaining dead parts of the above ground vegetation, leaf litter considerably adds to the forest floor. Herbaceous ground flora also enrich the forest floor with organic matter both directly and indirectly. It traps around its litters and stumps a large quantity of leaf litter which would have otherwise gone out side of the ecosystem.

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B. K. Trivedi , G. P. Mishra

Abstract

Periodic estimations of nutrients in vegetation and soil of grassland revealed that maximum nitrogen was found in live compartment in July. During summer months, the phosphorus of community increased gradually and reached at peak in May. The highest silica content was recorded from litter in April and lowest from live compartment in January. Considering the amount of these nutrients in the community the trend was Ca > N > P. The upper layer of soil contained always more nitrogen than the lower and maximum total nitrogen was present in the month of June. Available phosphorus was maximum in rainy season.

Keywords

Biogeochemical Cycle, Standing State Sehima Community, Jhansi

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Ram Prasad , G. P. Mishra

Abstract

The present investigation was carried out in teak forests of Gourjhamer Range of Sagar Division The teak forests of this Range constitute about 16.4 per cent of the total teak forests and 8.7 per cent of the total mixed forests of Sagar District. In the present investigation. the organic matter productivity of four important tree species viz T. grandis. T. tomentosa A. latifolia and D. melanoxvlon were studied in relation to their grith at breast height (gbh), and age (in T. grandis) only. While comparing different species for their net primary productivity it was found that A. latifolia was more efficient in dry matter production followed by T. tomentosa, T. grandis ond D melanoxylon. At 50-55 cm ghh the total production per tree was 433.50 kg in A. latifolia, 184.18 kg in T. tomentosa, 157.89 kg in T. grandis an 78.65 kg dry matter in D. melanoxylon. Mean annual productivity can be expressed accurately in T. grandis due to the presence of prominent annual growth rings whereas in T. tomentosa, A. latifolia, D. melanoxylon and other species of dry deciduous forest, due to the absence of prominent growth rings, assessment of age is not accurate. In such cases, gbh rather than age was found to be useful in comparing the productivity of different species.

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G. P. Mishra , R. N. Joseph

Abstract

Very little is known about Ihe growth behaviour of Anogelssus penduta in Rajasthan. Tentative rotation age has been fixed for its working so for. So attempts have been made for the first time to derive Its rotation age for maximum volume production in different representative localities of the State and to compile its authentic growth statstic not only upto the age of rotation period but also beyond it upto the age of 70 years. All the volume figure, given in the article. Pertains to total stem volume only.

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Ram Prasad , G. P. Mishra

Abstract

In spite of uniform climatic conditions the forests of Sagar are very heterogeneous in composition and quality. The present state of vegetation appears to be the outcome of micro-climatic influences resultiug from variation in geological formations, physiography and biotic interferences.Though, Diospyros melanoxylon like teak and Anogeissus latifolia, out numbers other species in plant density, its ultimate progression to maturity is One of the lowests. This indicates a high degree of mortality mainly due to biotic factors such as grazing, cutting, leaf plucking and fires.Like other tree species; annuals and perennials, Diospyros melanoxylon in dry deciduous teak forests have been provided with the phenomenon of dying back to ensure its survival and subsequent establishment. The dying back in this species appears to last upto 10 years of age beyond which normal all-round growth takes place and plants are established.

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G. P. Mishra , A. K. Yadav

Abstract

no abstract

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